Collecting main for by-product coke ovens



w. H. PAVlTT-, JR. COLLECTING MAIN FOR BY-PRODUCT COKE OVE NS.

A P P L l C A T l 0 N f L E D J AN- 19, 1920- I Patented May 2, 1922.

17 n a 6 W1 entree srn'ras were!" OFFICE.

WILLIAM H. PA'VITT, JR., 0F BROOKLYN, NEW YORK, ASSIGNOR OF ONE-THIRD TO LOUIS 'WILPUTTE AND TWO-THIRDS TO ALICE A. WILPUTTE, BOTH OF NEW ROCHELLE, NEW YORK.

intense.

Specification of Letters Patent.

Patented May 2,1922.

Application filed January 19, 1920. Serial No. 352,478.

To all whom it may concern:

Be it known that I, WILLIAM H. PAvrrT, J12, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in C01- lecting Mains for By-Product Coke Ovens, of which the following is a specification.

The general object of my present invention is to provide improved means for supporting the gas collecting main of a by-product coke oven battery.

The various features of novelty which characterize my invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, however, and the advantages possessed by it, reference should be had to the accompanyin drawings and descriptive matter in which have illustrated and described a preferred embodiment of the invention.

Of the drawings:

Fig. l is a somewhat diagrammatic elevation of the upper portion of a by-product coke oven battery;

Fig. 2 is a section on the line 2-2 of Fig. l; and

Fig. 3 is a side elevation of a portion of a collecting main-and its supports.

In the drawing A represents a by-product coke oven battery of well-known type having horizontal coking chambers B. Running lengthwise of the battery at one side is the usual gas collecting main D connected to each of the coking chambers B of the battery by a corresponding standpipe connection C and supported on the usual vertical buckstays E at the corresponding side of the battery. Each standpipe connection includes one or more flexible joints C to accommodate expansion and contraction and relative movement of the battery structure and main D. The collecting main shown is formed in the usual manner of iron or steel plate and is anchored at or near its center to the subjacent buckstays E in the usual way as by means of a bracket F which may be riveted or bolted to the collecting main and likewise rigidly secured to the corresponding buckstays E. At intervals alon its length at the opposite sides of the yoke the rounded bottom of the collecting main rests in cast metal yokes G which may be bolted or riveted to the collecting main. Each of the yokes G has sw-iveled to it, as by means of a pin I parallel to the length of the main, a yoke sha ed bearing block H. Each bearing block I? has a flat underside which rests on a roller support shown as comprising a roller K transverse to the length of the main and having reduced ends 1ournaled in bearing notches L formed in a supportin base L which is bolted or otherwise secure to the cross bars E carried by the upper ends of the corresponding buckstays E. Shims M may be employed to prinlg the roller supports L to the proper eve With the supporting means for the collecting main described, the latter is free to contract and expand in response to changes in its temperature without putting any strain upon the collecting main supports which the latter are not well adapted to resist. The supporting means not only take care of expansion and contraction in the over-all length of the collecting main, but they accommodate the twisting of the end portions of the main, about the longitudinal axis of the main bottom. So far as I am aware, I am the first to provide collecting main supporting means well adapted to compensate for the twisting tendency of the ends of the main. This twisting tendency has been the cause, though I believe not the recognized cause, of fractured and distorted supports for the ends of the collecting main heretofore employed which were well adapted to accommodate simple expansions and contractions in the length of the main and were seemingly of ample strength to support the load carried by them. The magnitude of the twisting forces to which the ends of the collecting main are subjected will be realized when account is taken of the facts that a collecting main, in ordinary practice, is usually of a length not less than 130 ft. or so, andnot infrequently the length is well over 200 ft.; that the vertical depth of the collecting main proper at its larger end is ordinarily from four to six feet; and that of use and weather. The bottom of the main will ordinarily be at a temperature in the neighborhood of 212 F. as it is constantly bathed by a stream' of tar and annnonialiquor. The top wall of the collecting main will ordinarily be at a considerably higher temperature, but Will vary in temperature very substantially with changes in the weather. With a low atmospheric temperature the upper portion of the main will, other things being equal, be appreciably cooler than at higher atmospheric tempera tures, and the influence of the wind has a great deal to do with the temperature of the upper portion of the main. \Vith a cold driving wind against one side of the collecting main, the temperature of the upper portion of that sidemay well be more than a hundred degrees less than the temperature of the other side of the main. In consequence of the conditions referred to above, there is a tendenc for the ends of the collecting main to twist to a substantial extent. With the swivel axis for the bearing member G at right angles to the axis of the roller L my improved supports accommodate both twisting and elongation or contraction of the main Whether occurring separately or simultaneously; and I believe .I am the first to provide simple and efi'ective means for accomplishing this result.

While in accordance with the provisions of the statutes, I have illustrated and described the best form of embodiment of my invention noW known to me, it will be. apparent to those skilled in the art that changes may be made in the form of apparatus disclosed without departing from the spirit of my invention as set forth in the appended claims, and that in some cases certain features of my invention may be used to advantage without a corresponding use of other features.

Having now described my invention. what I claim as new. and desire to secure by Letters Patent, is:

1.. In a lay-product coke oven battery. the combination with the oven structure of a. collecting main anchored adjacent its center to said structure. and supports for the end portions of the main, comprising provisions adapted to "yield to accommodate the elongation and contraction in the. length of the main. and twisting movements of the main. resulting from the temperature changes to which the main is subjected.

2. In a byproduct coke oven battery. thecombination with the oven structure of a collecting main anchored adjacent its center to the oven structure. supporting means for the end portions of the main, each comprising a roller, the axis of which is at right angles to the length of the main and a hinged connection. the axis of which is parallel to the length of the main.

3. In a by-product coke oven battery, the combination with the oven structure of a collecting main. anchored adjacent its center to the said structure, and supporting means for the end portions of the main, each comprising a supporting member pivoted to the main and a roller support interposed between said supporting member and the bottom structure. with said roller at right angles to the axis of the pivotal connection between said supporting member and the main.

Signed at New York, in the county of New York and State of New York, this 17th day of J any., A. D. 1920.

WILLIAM H. PAVITT, JR. 

